Nut-lock.



W. E. POUNDS.

NUT LOOK.

Patented Jan. 26, 1909.

UNITED STATES PATENT OFFICE.

WILL E. POUNDS, OF OAKMAN, ALABAMA, ASSIGNOR OF ONE-HALF TO OSCAR DAY, OF

' OAKMAN, ALABAMA.

' NUT-LOOK.

Specification of Letters Patent.

Patented Jan. 26, 1909.

Application filed April 3, 1908. Serial No. 424,944.

citizen of the United States, residing at Oakman, in the county of Walker and State of Alabama, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification, reference be had therein to the accompanying drawmg. I

This invention relates to means for fastening a nut upon a bolt, whereby the nut can not be accidentally displaced or will not have independent, rotary movement upon said bolt, after it has been fastened thereon.

The object of the invention is the construction of simple and comparatively inexpensive fastening means for fastening a nut and bolt together against independent rotary movement.

when assembled with the Another object of the invention is the peculiarconstruction of a s ring-key, which, olt. and nut will positively secure the nut from accidental displacement oif of the bolt.

With these and other objects in View, the invention consists of certain novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described and claimed. p

In the drawings: Figure 1 is a topplan view of a device constructed in accordance with the present invention. Fig. 2 is a view, in side elevation, partly in longitudinal section, of a device constructed in accordance with the present invention. Fig. 3 is an enlarged, perspective View of the spring-key. Fig. 4 is an end-view in elevation, of a nut employed in the present invention. Fig. 5 is a fragmentary, sectional view, showing another embodiment of the spring locking key. Fig. 6 is an enlarged, perspective view of the key depicted in Fig. 5.

Referring to the drawings by numerals, 1 designates a support, through which extends the bolt 2, which is provided with a longitudinally-extending groove 3, which groove terminates at its inner end in an elongated socket or recess 4, that is formed in a horizontal plane below the groove 3, or, in other words, the socket or pocket 4 is deeper than the groove 3. I The bolt 2 is screw-threaded, at 5, and upon thescrewthreaded portion, is mounted an internally threaded nut 6. The nut 6 is provided with, preferably, diametrically-arranged, cut-out lower end of portion 13.

portions 7, F i 4, one of which is adapted to register with t e groove 3. The structure of the bolt and the nut is the same in both Figs. 2 and 5, the only difierence being in the spring locking-key. The spring locking-key 8, Figs. 2 and 3 comprises a body portion 9, formed of metal and having a vertical, inner wall 10 terminating at its upper end' in a spring-extension 1 1 ,which extension 11 terminates, at its outer end, in a downwardly-extending portion 12, and said portion 12 terminates, at its outer end, in a downwardly and inwardly-extending portion 13; the portions 12 and 13 forming a substantially \I-shaped,

I s ring-stru cture earn-in an inwardl extendmg, horizontal extension 14, integral with the The portions 11 to 14 are. formed of resilientmaterial, so that portions 13 a11d.14 can be forced together towards portions 11 and 12 for permitting the passage of saidportions 11 tov 14 into the registering out-out portion or notch 7 of the nut and'the grooves 3 of the bolt for allowing the portions 13 and 14 to springer snap into the socket or pocket 4 of the bolt, Big. 2; thebody portion 9 of the spring-key lying snug in the groove 3.

It is to be noted that by reason of the resiliency of the expansible portion of the locking-key, the same can be forcedthrough the mouth of the opening constituted by one of the cut-out ortions 7 and groove 3, and as soon as saic expansible portion enters the socket or pocket, the same will expand, thereby causing the lower portion 14 to bear parallel against the bottom of the socket 4 and the up er flat ortion 11 to bear against the up er ace oft e cut-out portion 7 of the nut, ig. 2, forming an efficient and rigid lock for preventing nut 6 from having independent rotary movement, or being accidentally displaced therefrom.

In Figs. 5 and 6, the same structure of the bolt 2 and the nut 6 is employed, except that thespring-locking key 8 is formed of a resilient strip of metal, and comprises a body portion 15 terminating at one end in an expansible,substantially U-sha ed portion 16,

which portion 16 is provide with a lower portion 17 adapted to be normally seated in the socket or pocket 4, the same as portion 14 of key. 8; theexpansible bodyof the spring key 8* can be forced into the cut-out portion 7 of the nut, and be sprung into the socket 4, as readily as the key 8, but the key 8 is more efiioient, as its entire body lies fiat within the groove B and thereby prevents any lateral movement of the body upon" the bolt, "and also enables the nut to engage a porti'onof the body, which removes some of the strain from the expansible portion, should a person endeaver to remove the nut, after the expansible portion of the key has been seated in pocket 4.

It is to be understood that I have provided a key having a substantially U-shaped end,

which end is expansibleand is adapted tobe positioned in a-portion of-the bolt and aportion of thenut for locking said nut and bolt against independent rotary movement; the body portion-of the key having an integral part thereof bent parallel thereon, and the integral part-being eXpansible for the purpose hereinbefore, specified.

What I claim is: 1. In a nut look; the combination with a "bolt and a nut threaded thereon, said bolt provided with a groove and a pocket, the pocket deeper than the groove and -formed in ahorizontal plane below the bottom of the ;';groove, said nut-provided'with a notchregisatering with-saidgroove and pocket,- of a look- .i mg key having a 'bodyrestingm the groove of-the Jbo-l,t,-:said-" key, provided "with an ex-v pansibleqloeking portion integral with-the body-portion; said locking portion compristing a straight, upper or outer ortion ter- -minatingat itsouter end in a ownwardly and outwardly-extending:portion,said outwardly-eX-tending portion terminating at its outer-endin adownwardly and inwardly-extending portion, and said inwardly-eXtendl portionterminating a lower or inner, horizontal straight portion parallel with the upper or outer portion and said last-mentioned straight portion seated in the pocket.

2.- In a nut look, the combination of a bolt provided with a longitudinally-extending groove terminating at its inner end in an elongated recess deeper than the groove, a nut threaded upon the grooved portion of said bolt," said nut provided with a notch adapted to register with the groove of said bolt, a locking key having a body resting in the groove and notch, said key provided 5 -with an expansible looking portion, said looksaid bolt, and a ooking-keypositioned in the ;.groove and -1n the nut, said key provided with asubstantially U-shaped portion at its inner end, the lower end of the U-shapedpor- "-ti'on positioned" entirely-within the "reeess'and having one end engaging the end of'the recess for preventing the key-from being displaced o'ltof the bolt.

In testimony whereof I hereunto allix my signature iii-presence of two Witnesses.

ILL E. POUNDS. Vfitnesses Jon'N onn'is, MURRAY CONNOR.

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